<template>
  <div class="product-card">
    <div class="card-header">
      <span class="title">{{ property.title }}</span>
      <el-image v-if="property.titleIcon" :src="property.titleIcon" class="title-icon" />
      <div class="flex-1"></div>
      <span v-if="property.moreLink" class="more-link" @click="goMore">
        查看更多 <el-image v-if="property.moreIcon" :src="property.moreIcon" class="more-icon" />
        </span>
    </div>
    <div :class="`box-content min-h-30px w-full flex flex-row flex-wrap`" ref="containerRef">
      <div
        class="relative box-content flex flex-row flex-wrap overflow-hidden bg-white"
        :style="{
          ...calculateSpace(index),
          ...calculateWidth(),
          borderTopLeftRadius: `${property.borderRadiusTop}px`,
          borderTopRightRadius: `${property.borderRadiusTop}px`,
          borderBottomLeftRadius: `${property.borderRadiusBottom}px`,
          borderBottomRightRadius: `${property.borderRadiusBottom}px`
        }"
        v-for="(spu, index) in spuList"
        :key="index"
      >
        <!-- 角标 -->
        <div v-if="property.badge.show" class="absolute left-0 top-0 z-1 items-center justify-center">
          <el-image fit="cover" :src="property.badge.imgUrl" class="h-26px w-38px" />
        </div>
        <!-- 商品封面图 -->
        <div
          :class="[
            'h-140px',
            {
              'w-full': property.layoutType !== 'oneColSmallImg',
              'w-140px': property.layoutType === 'oneColSmallImg'
            }
          ]"
        >
          <el-image fit="cover" class="h-full w-full" :src="spu.picUrl" />
        </div>
        <div
          :class="[
            ' flex flex-col gap-8px p-8px box-border',
            {
              'w-full': property.layoutType !== 'oneColSmallImg',
              'w-[calc(100%-140px-16px)]': property.layoutType === 'oneColSmallImg'
            }
          ]"
        >
          <!-- 商品名称 -->
          <div
            v-if="property.fields.name.show"
            :class="[
              'text-14px ',
              {
                truncate: property.layoutType !== 'oneColSmallImg',
                'overflow-ellipsis line-clamp-2': property.layoutType === 'oneColSmallImg'
              }
            ]"
            :style="{ color: property.fields.name.color }"
          >
            {{ spu.name }}
          </div>
          <!-- 商品简介 -->
          <div
            v-if="property.fields.introduction.show"
            class="truncate text-12px"
            :style="{ color: property.fields.introduction.color }"
          >
            {{ spu.introduction }}
          </div>
          <div>
            <!-- 价格 -->
            <span
              v-if="property.fields.price.show"
              class="text-16px"
              :style="{ color: property.fields.price.color }"
            >
              ￥{{ fenToYuan(spu.price as any) }}
            </span>
            <!-- 市场价 -->
            <span
              v-if="property.fields.marketPrice.show && spu.marketPrice"
              class="ml-4px text-10px line-through"
              :style="{ color: property.fields.marketPrice.color }"
              >￥{{ fenToYuan(spu.marketPrice) }}
            </span>
          </div>
          <div class="text-12px">
            <!-- 销量 -->
            <span
              v-if="property.fields.salesCount.show"
              :style="{ color: property.fields.salesCount.color }"
            >
              已售{{ (spu.salesCount || 0) + (spu.virtualSalesCount || 0) }}件
            </span>
            <!-- 库存 -->
            <span v-if="property.fields.stock.show" :style="{ color: property.fields.stock.color }">
              库存{{ spu.stock || 0 }}
            </span>
          </div>
        </div>
        <!-- 立即购买按钮 -->
        <div v-if="property.btnType.type === 'buy' && property.btnShow" class="absolute bottom-8px right-8px">
          <!-- 文字按钮 -->
          <span
            v-if="property.btnBuy.type === 'text'"
            class="rounded-full p-x-12px p-y-4px text-12px text-white"
            :style="{
              background: `linear-gradient(to right, ${property.btnBuy.bgBeginColor}, ${property.btnBuy.bgEndColor}`
            }"
          >
            {{ property.btnBuy.text }}
          </span>
          <!-- 图片按钮 -->
          <el-image
            v-else
            class="h-28px w-28px rounded-full"
            fit="cover"
            :src="property.btnBuy.imgUrl"
          />
        </div>

        <!-- 加入购物车按钮 -->
        <div v-if="property.btnType.type === 'cart' && property.btnShow" class="absolute bottom-8px right-8px">
          <!-- 文字按钮 -->
          <span
            v-if="property.btnCart.type === 'text'"
            class="rounded-full p-x-12px p-y-4px text-12px text-white"
            :style="{
              background: `linear-gradient(to right, ${property.btnCart.bgBeginColor}, ${property.btnBuy.bgEndColor}`
            }"
          >
            {{ property.btnCart.text }}
          </span>
          <!-- 图片按钮 -->
          <el-image
            v-else
            class="h-28px w-28px rounded-full"
            fit="cover"
            :src="property.btnCart.imgUrl"
          />
        </div>
      </div>
    </div>
  </div>
</template>
<script setup lang="ts">
import { ProductCardProperty } from './config'
import * as ProductSpuApi from '@/api/mall/product/spu'
import { fenToYuan } from '../../../../../utils'

/** 商品卡片 */
defineOptions({ name: 'ProductCard' })
// 定义属性
const props = defineProps<{ property: ProductCardProperty }>()
// 商品列表
const spuList = ref<ProductSpuApi.Spu[]>([])
watch(
  () => props.property.spuIds,
  async () => {
    spuList.value = await ProductSpuApi.getSpuDetailList(props.property.spuIds)
  },
  {
    immediate: true,
    deep: true
  }
)

/**
 * 计算商品的间距
 * @param index 商品索引
 */
const calculateSpace = (index: number) => {
  // 商品的列数
  const columns = props.property.layoutType === 'twoCol' ? 2 : 1
  // 第一列没有左边距
  const marginLeft = index % columns === 0 ? '0' : props.property.space + 'px'
  // 第一行没有上边距
  const marginTop = index < columns ? '0' : props.property.space + 'px'

  return { marginLeft, marginTop }
}

// 容器
const containerRef = ref()
// 计算商品的宽度
const calculateWidth = () => {
  let width = '100%'
  // 双列时每列的宽度为：（总宽度 - 间距）/ 2
  if (props.property.layoutType === 'twoCol') {
    width = `${(containerRef.value.offsetWidth - props.property.space) / 2}px`
  }
  return { width }
}

const goMore = () => {
  if (props.property.moreLink) {
    window.open(props.property.moreLink, '_blank')
  }
}
</script>

<style scoped lang="scss">
.product-card {
  padding: 12px 12px 0;
  background: #fff;
  border-radius: 12px;

  .card-header {
    display: flex;
    align-items: center;
    margin-bottom: 8px;

    .title {
      margin-right: 4px;
      font-size: 16px;
      font-weight: 600;
      color: #222;
    }

    .title-icon {
      width: 18px;
      height: 18px;
      margin-right: 4px;
    }

    .more-link {
      display: flex;
      align-items: center;
      cursor: pointer;

      .more-icon {
        width: 18px;
        height: 18px;
      }
    }
  }
}
</style>
